Erik Kostson
Ansys Employee
Well you can have an initial stress state in one step (or if one prefers to move these parts via displ. or a force), and then remove that (BC, or forces) in another step, and study how the structure returns back.
(there is no term like work energy analysis in ansys as far as I know - we can look at how these energies evolve through time by post processing them)
So we can look at energy results like internal and kinetic energy say in a transient analysis.

All the best